n :  a psychedelic drug (as LSD)
, adj 1  :  of, relating to, or being drugs (as LSD) capable of producing abnormal psychic effects (as hallucinations) and sometimes psychic states resembling mental disorder  2  :  produced by or associated with the use of psychedelic drugs <a experience>  psy*che*del*i*cal*ly adv 
 
 
 
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